As with so many other scientific theories, this too will be subject to revision with the next study.

This is why blindly jumping on the latest "science" is never a good idea. I remember when it was global cooling, then it was global warming, then it was climate change, now it's atmospheric deterioration, and tomorrow it'll be something else entirely. And that's just in the last 30 years.

When "scientists" can accurately forecast whether winter will be warmer or cooler than last year with any consistency, then we'll have the start to believing that they can know with any certainty whatsoever what's going to happen in 5,10,50 or even 100 years.

They don't. And every "theory" they've produced has failed utterly when they try to model it. This country is about to spend billions of dollars to deal with a problem that not a single person can prove even exists.

If people can't see that this emperor has no clothes, then it's only because they have their hands over their eyes.

JIM... The Solar storms (sun spots) are a direct cause of warming and cooling by the mechanism of causing more clouds or less clouds on earth due to blocking or not blocking cosmic radiation cloud seeding. The science is clear. But the propaganda for tax $$ controls has had to create a mythical CO2 pollutant to scapegoat so that all human life and all energy uses from oil and coal must be punished for affecting the purity of air surrounding the earth. The pennance fees will go into a United World Government to be re-distributed, and must they be paid in a new world currency. In the meantime the solar storms just keep rolling along. But relax, Dr. Obama has smiled and told us it wont hurt.

Jim - jumping on the latest "science" is never a good idea. I remember when it was global cooling, then it was global warming.... And every "theory" they've produced has failed utterly when they try to model it. This country is about to spend billions of dollars to deal with a problem that not a single person can prove even exists.

If people can't see that this emperor has no clothes, then it's only because they have their hands over their eyes..

There is a difference between scientific skepticism and being a science denier.Unfortunately, ideologues of the Left AND the Religious Right tend to reject science that doesn't fit their preset ideology.

The Bell Curve exists, blacks on average are of lower intelligence than the average white or Asian...but that must be rejected as science...because "anti-racism" is the higher truth..

And the Religious Right had conniptions over the 1990s discovery that humans and other low-gestation number/long gestation rate mammalscarry their own internal "abortion clinic" to detect & weed out the defectives while in the womb through natural abortion - and not tie up many months of their fertility span carrying a bad fetus or two. (reptiles, insects, birds, rodents and other mammals with high litters don't bother, as one or two "bad ones" in a crop of multiple offspring don't matter for reproductive success)

In the 60s and 70s, as human population explosion depleted our ability to utilize any "spare" arable land - scientists recognized how important climate change was and how important it was to begin to learn when it was happening. Their early models, primitive computing power, first tries - gave conflicting results.

Now we are pretty confident that we are in a net warming period. Only anti-science Religious Right folks reject that conclusion.

What we don't know is How Much man's activities contribute. And that is where "man is bad" Greenie ideologues have gotten too much say.